Here is my most recent prototype of a Peltier-cooled Canon 450D DSLR intended for astro-imaging. The intention was to incorporate improvement into each version. In this particular prototype, the camera is housed in a smaller plastic case, making it more compact, lighter, and more sturdy.

A custom-fabricated aluminum lens mount is used to allow the modified camera to accept standard Canon lenses and T-adapters. A Baader UV-IR filter is used to optimize sensitivity to H-alpha wavelengths, which also serves as the sealed chamber’s optical window. During operation, sensor temperature drops to 30 degrees C below ambient. To avoid dew from condensing on the optical window, coils of fine nichrome wire were used.
Dimensions: 16 cm x 12 cm x 7 cm case with 7.5 cm x 7 cm x 6 cm heat sink protruding on one side
Weight: approximately 1250 grams
Temperature: up to 30 deg C below ambient
Power supply: 12V 12A for the Peltier module, 8.4V 1.5A for the camera
To view other my other DSLR modification projects, follow the links below:
August 2014 Modified Canon 450D DSLR for Astro-imaging (improved sealed chamber prototype)
March 2014 Modified Canon 450D DSLR for Astro-imaging (sealed chamber prototype)
February 2014 Modified Canon 1000D DSLR (Baader BCF filter replacement)
December 2013 Modified Canon 450D DSLR for Astro-imaging (custom-fabricated lens mount)
November 2013 Modified Canon 450D DSLR for Astro-imaging (sealed chamber prototype)
February 2013 Modified Canon 450D DSLR for Astro-imaging
For DIY astronomy projects useful for astrophotography, click here.
For tutorials on how to get started with astrophotography, click here.
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© Anthony Urbano (Manila, Philippines)
What you have done here is pretty amazin. One question though, Why would you need a peltier cooler for this project.? I mean what is the requirement ?
Thanx
Hi Vishal, the cooler the sensor is, the less noise in the image. More details here.
Eteny
Hi,
Great post and I would like to build it myself. Right now i’m building a powerbox to connect my mount and dew heaters. So, in advance, I would like to know how much power usage you have with the peltier cooling. You use only a 12v , 12Ah battery for the peltier? How long can you feed the peltier cooling?
Thank you!